Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5109216 | Portable intrusion alarm | Alfred Yarbrough | 1992-04-28 |
| 4853677 | Portable intrusion alarm | Alfred Yarbrough | 1989-08-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5109216 | Portable intrusion alarm | Alfred Yarbrough | 1992-04-28 |
| 4853677 | Portable intrusion alarm | Alfred Yarbrough | 1989-08-01 |